網友第一次開發EOS區塊鏈的經驗

時間  2019-11-10
標籤 網友 第一次 開發 eos 區塊 經驗 欄目 比特幣 简体版
原文   原文鏈接

在處理項目時，用Java Connector for EOS區塊鏈編寫：前端

  • 建立錢包
  • 建立賬戶
  • 建立交易
  • 建立簽名交易
  • 在賬戶之間轉移代幣

我遇到了各類和運行本地EOS節點須要遵循的基本步驟。這個小指南純粹是爲了幫助你啓動和運行本身的EOS節點。幾天的內容和圖片彙編了個人閱讀和理解。node

本指南不解釋什麼是區塊鏈，這是特定的，以儘快開始使用EOS並減小麻煩。純粹基於經驗。docker

EOS區塊鏈概述

EOSIO附帶了許多程序。你將使用的主要部分以及此處涉及的部分是：編程

  • nodeos（node + eos = nodeos） ，能夠使用插件配置以運行節點的核心EOSIO節點守護程序。示例用法是塊生產，專用API端點和本地開發。
  • cleos（cli + eos = cleos） ，命令行界面，用於與區塊鏈交互並管理錢包。
  • keosd（key + eos = keosd） ，將EOSIO密鑰安全存儲在錢包中的組件。
  • eosio-cpp（eosio.cdt的一部分） ，它將C ++代碼編譯爲WASM並能夠生成ABI（CDT是合約開發工具鏈）。

這些組件之間的基本關係以下圖所示。json

最新堆棧版本（截至本文編寫日）

  • nodeos：1.5.0
  • cleos：1.5.0
  • keosd：1.5.0
  • eosio.cdt：1.4.1
  • eosio.contracts：1.4.0

安裝本地節點

有幾種方法能夠作到：api

  • 1.使用Docker，快速簡便。
  • 2.使用二進制文件，它也行。

使用Docker安裝

You create 2 containers. One for 'nodeos' and another for 'keosd'
#Pull latest docker image of EOS
docker pull eosio/eos-dev
#Create local network
docker network create eosdev
#Start nodeos(Core Daemon)
docker run --name nodeos -d -p 8888:8888 --network eosdev -v /tmp/eosio/work:/work \
-v /tmp/eosio/data:/mnt/dev/data -v /tmp/eosio/config:/mnt/dev/config eosio/eos-dev \
/bin/bash -c "nodeos -e -p eosio --plugin eosio::producer_plugin \
--plugin eosio::history_plugin --plugin eosio::chain_api_plugin \
--plugin eosio::history_api_plugin --plugin eosio::http_plugin \
-d /mnt/dev/data --config-dir /mnt/dev/config --http-server-address=0.0.0.0:8888 \
--access-control-allow-origin=* --contracts-console --http-validate-host=false"
###### NOTES about above Command
- Creating a docker container running 'nodeos' daemon
- Exposing port 8888 so that you can access the 'nodeos' using RPC and HTTP
- Mounting few directories on your local machine so that you don't have to login into container
- Few plugins which will allow this node to become a producer, expose rpc api over http, exposing command line interface to run 'nodeos' commands
#Run keosd(Wallet and Keystore)
docker run -d --name keosd --network=eosdev -i eosio/eos-dev /bin/bash \
-c "keosd --http-server-address=0.0.0.0:9876"
#Check installation
docker logs --tail 10 nodeos
and you will see something like:
info 2018-12-04T15:01:22.003 thread-0 producer_plugin.cpp:1494 produce_block ] Produced block 00005ce7fabcbcf8... #23783 @ 2018-12-04T15:01:22.000 signed by eosio [trxs: 0, lib: 23782, confirmed: 0]
info 2018-12-04T15:01:22.507 thread-0 producer_plugin.cpp:1494 produce_block ] Produced block 00005ce84867bcbf... #23784 @ 2018-12-04T15:01:22.500 signed by eosio [trxs: 0, lib: 23783, confirmed: 0]
info 2018-12-04T15:01:23.005 thread-0 producer_plugin.cpp:1494 produce_block ] Produced block 00005ce936ca4869... #23785 @ 2018-12-04T15:01:23.000 signed by eosio [trxs: 0, lib: 23784, confirmed: 0]
i
#Check Wallets (Open bash for keosd)
docker exec -it keosd bash
and once in the container, on bash, execute this:
cleos --wallet-url http://127.0.0.1:9876 wallet list keys

Should show empty wallets:
Wallets: []
#Check 'nodeos' end points - run this out side containers
curl http://localhost:8888/v1/chain/get_info

{
   "server_version":"549c96cd",
   "chain_id":"cf057bbfb72640471fd910bcb67639c22df9f92470936cddc1ade0e2f2e7dc4f",
   "head_block_num":24182,
   "last_irreversible_block_num":24181,
   "last_irreversible_block_id":"00005e751a1e31b15acd25ffc8725cb2c67926647edb89e726e386716afdef5d",
   "head_block_id":"00005e76fd035dbf694d2a575bb1849f436428b466fd95323e43619b73bf7b9d",
   "head_block_time":"2018-12-04T15:04:41.500",
   "head_block_producer":"eosio",
   "virtual_block_cpu_limit":200000000,
   "virtual_block_net_limit":1048576000,
   "block_cpu_limit":199900,
   "block_net_limit":1048576,
   "server_version_string":"v1.5.0-rc2"
}
#Alias cleos so that you can access it by simply 'cleos'
docker network inspect eosdev

check for keosd IP address in the response of above command and execute the following:

alias cleos='docker exec -it nodeos /opt/eosio/bin/cleos --url http://127.0.0.1:8888 --wallet-url http://172.18.0.3:9876'

使用二進制文件安裝 - MAC指令

#Step 1: Install binaries
brew tap eosio/eosio
brew install eosio
#Step 2: Setup a development directory, stick to it.
mkdir contracts
cd contracts
#Step 3: Install CDT. The EOSIO Contract Development Toolkit, CDT for short
brew tap eosio/eosio.cdt
brew install eosio.cdt
#Boot Node and Wallet
  #Start keosd: keosd &
  #Start nodeos:
   nodeos -e -p eosio \
--plugin eosio::producer_plugin --plugin eosio::chain_api_plugin --plugin eosio::http_plugin --plugin eosio::history_plugin --plugin eosio::history_api_plugin \
-d /Users/vijay/eos_blockchain/contracts/eosio/data \
--config-dir /Users/vijay/eos_blockchain/contracts/eosio/config \
'--access-control-allow-origin=*' --contracts-console 
--http-validate-host=false '--filter-on=*' >> nodeos.log 2>&1 &
 #Check installation (in current directory)
 tail -f nodeos.log
 #Check the wallet
 cleos wallet list
 #Check nodeos endpoints
 curl http://localhost:8888/v1/chain/get_info

上述步驟之一將幫助你設置和運行本地節點。安全

使用錢包，賬戶和密鑰

如今你準備好在區塊鏈上作一些事情。在EOS中，你必須擁有一個賬戶才能執行任何操做，例如建立token，發送token，接收token，編寫交易等。此節點將有一個名爲eosio的系統用戶，所以你能夠使用此用戶來玩eos區塊鏈。bash

所以，在本節中，咱們將在本地節點上執行如下操做：前端工程師

  • 建立一個新錢包。
  • 建立新密鑰（私人+公共）。
  • 將這些鑰匙導入錢包。
  • 創建新賬戶。

讓咱們運行一些命令並觀察你所看到的。只需閱讀全部命令的註釋，便可瞭解它們的做用。curl

#List existing wallets. Wallet stores keys
cleos wallet list
#List wallet keys if any
cleos wallet list key
#you should see all empty response
#create wallet now
cleos wallet create
Creating wallet: default
"PW5JYR5u7WTk6RaJARE41qb3Wy6BJtcKCjpDAyjR2uV3CWF8nDFe7"
this will create wallet with name 'default'. Keep note of password it returns.
#Create new keys
cleos create key --to-console
Private key: 5JseP8pEsJfAEWix5U6ow77TrKu2uuBhjfobyzgYyCYAtnxnCk8
Public key: EOS4tmc8ufENZNkFQaj8ZfV9UfeRLnyaCecybSgPS1U8671BNdSxD
#Import the private keys in wallet 
cleos wallet import -n quant --private-key 5JseP8pEsJfAEWix5U6ow77TrKu2uuBhjfobyzgYyCYAtnxnCk8
#### MOST IMPORTANT STEP ####
Import genesis 'eosio' account keys in the wallet so that eosio account is available for creating new accounts.
Private key of eosio: 5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3

在這個階段，你已準備好帶有eosio（創世紀賬戶）的錢包和導入的新密鑰。因此咱們如今準備好作更多的操做了。

咱們將在下一節中執行如下操做：

  • 部署token合約，以便區塊鏈準備好建立新的token。
  • 建立新token。
  • 將新token分配給創世賬戶（eosio）。
  • 在用戶之間轉移token。
  • 檢查餘額等。
#Deploy Token Contacts
 
create an account first with the name 'eosio.token' for the contract
cleos create account <owner> <newaccountname> <pubkey1> <pubkey2>
cleos create account eosio eosio.token EOS5ySgzeHp9G7TqNDGpyzaCtahAeRcTvPRPJbFey5CmySL3vKYgE EOS5ySgzeHp9G7TqNDGpyzaCtahAeRcTvPRPJbFey5CmySL3vKYgE
you would see something like this:
executed transaction: 4a8b53ae6fa5e22ded33b50079e45550e39f3cb72ffa628e771ea21758844039  200 bytes  339 us #         eosio <= eosio::newaccount            {"creator":"eosio","name":"eosio.token","owner":{"threshold":1,"keys":[{"key":"EOS5ySgzeHp9G7TqNDGpy...
Deploy contract now:
cleos set contract eosio.token <path-to-contracts-directory>/contracts/eosio.token -p eosio.token
you would see something like this:
Reading WAST/WASM from /opt/eosio/bin/data-dir/contracts/eosio.token/eosio.token.wasm... Using already assembled WASM... Publishing contract... executed transaction: 41677b5fd5c701ca67a153abb09f79c04085cc51a9d021436e7ee5afda1781bd  8048 bytes  1212 us #         eosio <= eosio::setcode               {"account":"eosio.token","vmtype":0,"vmversion":0,"code":"0061736d01000000017f1560037f7e7f0060057f7e... #         eosio <= eosio::setabi                {"account":"eosio.token","abi":"0e656f73696f3a3a6162692f312e30010c6163636f756e745f6e616d65046e616d65...
#Create new Token
cleos push action eosio.token create '["eosio", "10000000000.0000 EOS",0,0,0]' -p eosio.token
you would see like this:
executed transaction: 566693cba0b0d5d11d85e40cdfb095d525612c5915e17ce75d309054e1912235  120 bytes  552 us #   eosio.token <= eosio.token::create          {"issuer":"eosio","maximum_supply":"10000000000.0000 EOS"}
#Send newly created Tokens (EOS) to genesis account (eosio)
cleos push action eosio.token issue '["eosio","1000000000.0000 EOS", "issue"]' -p eosio
you would see something like this:
executed transaction: 73f72879d220c720fcefb16b6aaf3db0ba492bd62020853b2cd5051557d5fa87  128 bytes  677 us #   eosio.token <= eosio.token::issue           {"to":"eosio","quantity":"1000000000.0000 EOS","memo":"issue"}
#Check above transactions if they are completed
cleos get transaction 73f72879d220c720fcefb16b6aaf3db0ba492bd62020853b2cd5051557d5fa87
and
cleos get transaction 566693cba0b0d5d11d85e40cdfb095d525612c5915e17ce75d309054e1912235
you should have long JSON response. It simply means above steps are successful.
#Check balance now of eosio account
cleos get currency balance eosio.token eosio
you would see:
1000000000.0000 EOS

你去了，如今你已經建立了token，eosio賬戶有不少EOS token，他如今能夠輕鬆地將資金髮送到其餘賬戶。

#Create a new account
cleos create account eosio user1 <public_key_of_user1> <public_key_of_user1>
#Check if account is created. You should have json response
cleos get account user1
#Send money to user1 account
cleos transfer eosio user1 "1000.00 EOS"
#Check the balance of user1
cleos get currency balance eosio.token vijay1

僅此而已！

======================================================================

分享兩個EOS區塊鏈相關的交互式在線編程實戰教程：

  • EOS入門教程，本課程幫助你快速入門EOS區塊鏈去中心化應用的開發，內容涵蓋EOS工具鏈、帳戶與錢包、發行代幣、智能合約開發與部署、使用代碼與智能合約交互等核心知識點，最後綜合運用各知識點完成一個便籤DApp的開發。
  • 深刻淺出玩轉EOS錢包開發，本課程以手機EOS錢包的完整開發過程爲主線，深刻學習EOS區塊鏈應用開發，課程內容即涵蓋帳戶、計算資源、智能合約、動做與交易等EOS區塊鏈的核心概念，同時也講解如何使用eosjs和eosjs-ecc開發包訪問EOS區塊鏈，以及如何在React前端應用中集成對EOS區塊鏈的支持。課程內容深刻淺出，很是適合前端工程師深刻學習EOS區塊鏈應用開發。

匯智網原創翻譯，轉載請標明出處。這裏是網友第一次開發EOS區塊鏈的經驗

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